1N3045ATRUR-1中文资料

APPEARANCE

DO-13

APPLICATIONS / BENEFITS Regulates voltage over a broad operating current

Wide selection from 6.8 to 200 V

Tight voltage tolerances available

Low reverse (leakage) currents

NOTES: 1. When using JEDEC numbers, B suffix signifies +/-5% tolerance on nominal zener voltage. The suffix A is used to identify +/-10% tolerance; no suffix indicates +/-20% tolerance: suffix C is used to identify +/- 2%; and suffix D is used to identify +/- 1% tolerance.

2. Zener Voltage (V Z) is measured with junction in thermal equilibrium with still air at a temperature of 25o C. The test currents (I ZT) at

nominal voltages provide a constant 0.25 watts.

3. The zener impedance is derived when a 60 cycle ac current having an rms value equal to 10% of the dc zener current (I ZT or

I ZK) is superimposed on I ZT or I ZK. Zener impedance is measured at 2 points to ensure a sharp knee on the breakdown curve

and to eliminate unstable units. See MicroNote 202 for variation in dynamic impedance with different zener currents.

4. These values of I ZM may often be exceeded in the case of individual diodes. The values shown are calculated for a unit at the high

voltage end of its tolerance range. Allowance has also been made for the rise in zener voltage above V ZT that results from zener

impedance and the increase in junction temperature as a unit approaches thermal equilibrium at a dissipation of 1 watt. The I ZM

values shown for +/-5% tolerance units may be used with little error for +/-10% tolerance units, but should be reduced by 7% to

include a +/-20% tolerance unit near the high voltage end of its tolerance range.

TEMPERATURE COEFFICIENT mV/o

C

T E M P E R A T U R E C

O E F F I C I E N T %/o

C

T L – Lead Temperature (o C) 3/8” from body NOMINAL ZENER VOLTAGE (VOLTS)

or T A on FR4 PC Board FIGURE 2

FIGURE 1

Typical Zener Voltage Temperature

Power Derating Curve Coeff. vs. Zener Voltage

FIGURE 3

Typical Capacitance vs. Reverse Voltage for 1-Watt Zeners

DO-13 (DO-202AA)

mV Change /o

C

Voltage Temperature

Coefficient %/o

C

P d - R A T E D P O W E R D I S S I P A T I O N (W A T T S )

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